Illustrative drawing. Actual product is confirmed to your specification at quotation.
Bolts
Stainless Steel Bolts
A2-70 (304) for general corrosion resistance and A4-80 (316) for marine and chemical exposure. Use anti-seize on the thread to prevent galling when tightening.
- Marked A2-70 or A4-80
- Partial and full thread
- Use anti-seize on the thread
Specifications
- Material
- Stainless steel A2 (AISI 304)Stainless steel A4 (AISI 316)
- Grade / property class
- A2-70A4-70A4-80
- Thread
- Metric coarse (ISO 261)Metric fine pitchUNC / UNF (imperial)
- Finish / coating
- Bright / self-colourPassivatedElectropolished (on request)
- Size range
- Up to M6M8–M12M14–M24M27–M48
- Standards
- ISO 3506-1ISO 4014 / 4017 (dimensions)DIN 931 / 933
Exact dimensions, lengths and availability are confirmed at quotation.
Applications
- Food and pharma equipment
- Marine and offshore
- Chemical and water treatment
- Outdoor structures
- Architectural fittings
Technical reference
Hex head bolt dimensions (ISO 4014 / ISO 4017)
| Thread | Pitch (mm) | Width across flats s (mm) | Head height k (mm) |
|---|---|---|---|
| M5 | 0.8 | 8 | 3.5 |
| M6 | 1.0 | 10 | 4.0 |
| M8 | 1.25 | 13 | 5.3 |
| M10 | 1.5 | 16 | 6.4 |
| M12 | 1.75 | 18 | 7.5 |
| M16 | 2.0 | 24 | 10.0 |
| M20 | 2.5 | 30 | 12.5 |
| M24 | 3.0 | 36 | 15.0 |
| M30 | 3.5 | 46 | 18.7 |
| M36 | 4.0 | 55 | 22.5 |
Nominal head height k and width across flats s, in mm, for standard hex head bolts. Confirm against your drawing.
Related and complementary fasteners
Request a quote for Stainless Steel Bolts
Give us the size, grade, finish and quantity. We reply within one business day.
Common questions
- Which sizes and grades of stainless steel bolts do you supply?
- We supply stainless steel bolts in Up to M6, M8–M12, M14–M24, M27–M48 size bands and grades/classes including A2-70, A4-70, A4-80. Exact availability, dimensions and lead time are confirmed at quotation.
- Which standards do stainless steel bolts follow?
- Common standards are ISO 3506-1, ISO 4014 / 4017 (dimensions), DIN 931 / 933. Tell us the standard you need and we will quote to it.
- Can you supply in bulk or with test certificates?
- Yes. We quote for loose lots and scheduled bulk supply across India, and can share manufacturer test certificates where available. Confirm the requirement when you request a quote.
Need a quote on bulk or custom industrial supply?
Share your specifications and quantities — our technical team will respond with pricing and lead time within one business day.